find the defference between the sum of two digit odd numbers and the sum of two digit even numbers?

Question

Difference between sum of two digit odd numbers and sum of two digit even numbers

Answer 1

????????????? sum 2   2-digit odd numbers, then sum 2   2-digit even numbers, then

differ tween 2 sums ????????????

depend on the numbers

sum av 2 odd numbers gotta be EVEN

sum av 2 even numbers gotta be EVEN

differ tween 2 sums gotta be 0, +-2, +- 4, +-6...